THE ROLE OF SOME ANTIOXIDANTS FOLIAR APPLICATION ON BIO-CHEMICAL AND YIELD OF TWO WHEAT CULTIVARS GROWN UNDER SALINITY STRESS

Abstract: Salinity stress is one of adversely affect cereal crop yield and quality all over the world. Improving salt tolerance in wheat plants by breeding new cultivars and a foliar application of antioxidants as alleviating treatments to enhance plant production under salinity stress. The aim of this work was to study the role of some antioxidants foliar application on bio-chemical of two wheat (Triticum aestivum L.) cultivars grown under salinity stress. In a split–split plot design with three replicates. Factors were 2 soil types (normal and saline), 2 wheat cultivars (Sakha 95 and Misr 3), and 4 foliar spray treatments (control, 300 mg silicate potassium L-1, 200 mg ascorbic acid L-1 and 200 mg salicylic acid L-1). The effect was highly positive on the biochemical characteristics of wheat when a combination of foliar spray with 200 mg ascorbic acid L-1 with Sakha 95 under saline soil caused considerable increases in the chlorophyll content, peroxidase activity, catalase activity, grain yield and chemical analysis of grain (carbohydrates, P and K%). While the highest content of proline and protein were obtained with c.v Misr 3 + foliar spray by 200 mg ASA L-1. It can be concluded that using cv Sakha 95 and a foliar spray by the ASA is most effective ways for increasing wheat productivity under salinity stress condition.